Hitch ball mount storage device



FIG. 1 is a perspective view of the hitch ball mount storage device;

FIG. 2 is a front elevation view of the hitch ball mount storage device;

FIG. 3 is a left-side elevation view of the hitch ball mount storage device;

FIG. 4 is a right-side elevation view of the hitch ball mount storage device;

FIG. 5 is a back view of the hitch ball mount storage device;

FIG. 6 is a top plan view of the hitch ball mount storage device; and,

FIG. 7 is a bottom plan view of the hitch ball mount storage device.

The broken lines form no part of the claimed design. 

CLAIM The ornamental design for a hitch ball mount storage device, as shown and described. 